A trenchless ultraviolet repair device for drainage pipe network and its process

Abstract

The present invention discloses a trenchless ultraviolet repair device for a drainage network and a process thereof, comprising a guide shaft body, a mobile carrier and an ultraviolet lamp body, wherein the guide shaft body extends into the pipeline along the setting direction of the pipeline and is attached to the inner wall of the pipeline, the head end of the guide shaft body is fixed to the pipeline mouth, the mobile carrier is arranged on the guide shaft body, the mobile carrier can move from its head end to the end along the guide shaft body, and the ultraviolet lamp body is fixed on the mobile carrier. The present invention has the following advantages and effects: it can effectively adapt to the layout of pipelines placed horizontally, vertically and obliquely; it has strong stability, the mobile carrier moves on the guide shaft body and will not collide with the inner wall of the pipeline; the inner wall of the pipeline that is wet, has water or oil will not hinder the movement of the mobile carrier, and it has the advantage of convenient recovery of the displacement carrier.

Description

Technical Field

[0001] The invention relates to the field of pipelines, and in particular to a trenchless ultraviolet repair device for a drainage network and a process thereof. Background Art

[0002] Ultraviolet repair is suitable for the repair of drainage pipes, water supply pipes, chemical and industrial pipes in construction projects.

[0003] A Chinese patent with application number CN202020503680.X discloses a pulling device for trenchless repair of ultraviolet light-curing pipelines, including a frame, a vertical plate, a transmission shaft, and a first motor; a rectangular vertical plate is welded on each of the left and right sides of the top of the frame, and the vertical plates are symmetrical on the left and right sides; the tops of the two vertical plates are connected by a transmission shaft, and the transmission shaft is rotatably connected to the vertical plates; a first motor is provided at the left end of the transmission shaft, and the first motor is fixed on the vertical plate, and the output shaft of the first motor is connected to the transmission shaft; a load-bearing roller is provided on each of the left and right sides below the transmission shaft, and the two load-bearing rollers are symmetrical on the left and right sides.

[0004] The above patent has the following defects:

[0005] ① It can only be applied to vertically placed pipes, and can only be lowered from top to bottom; it has great limitations and cannot be applied to horizontally or obliquely placed pipes.

[0006] ② During the process of tightening or loosening the connecting steel wire, the UV lamp body will shake. If it collides with the inner wall of the pipe, the UV lamp body will be damaged.

[0007] A Chinese patent with application number CN201922480456.3 also discloses a local repair device for a trenchless pipeline, including a built-in motor body, a main frame and a folding frame, the left end of the main frame being internally connected to the built-in motor body, and an ultraviolet lamp body being arranged inside the main frame, a cover shell being installed on the outside of the ultraviolet lamp body, and bolts being arranged inside the upper and lower ends of the cover shell, a limited fastening rod being installed inside the folding frame, and the folding frame being located at the upper and lower right sides of the ultraviolet lamp body, a bottom plate being welded to the top of the folding frame, and a cleaning mechanism being threadedly connected to the outer surface of the right end of the main frame.

[0008] The above patent has the following defects:

[0009] It can only be applied to horizontally placed pipes. If the inner wall of the pipe is wet or oily, the electric wheel will slip. If it is applied to vertically or diagonally placed pipes, the slip will be aggravated. Under its own gravity, the downward movement speed will gradually increase, and it will be impossible to maintain the set speed and move downward steadily. It will also increase the difficulty of returning to the pipe outlet from the bottom up, making recovery difficult.

[0010] In summary, it is necessary to make the following optimizations to the trenchless UV repair device for the drainage network:

[0011] Improve application adaptability to adapt to horizontal, vertical and diagonal pipeline layouts.

[0012] On this basis, we also need to do the following:

[0013] ① Ensure stability to avoid collision with the inner wall of the pipeline;

[0014] ②Solve the slipping phenomenon when the inner wall of the pipeline is wet or oily, and move stably at the set speed;

[0015] ③Solve the problem of recycling difficulties. Summary of the invention

[0016] The purpose of the present invention is to provide a trenchless ultraviolet repair device for a drainage network and a process thereof to solve the problems raised in the background technology.

[0017] The above technical objectives of the present invention are achieved through the following technical solutions:

[0018] In order to achieve the above object, the present invention provides a trenchless ultraviolet repair device for a drainage network, comprising:

[0019] A guide shaft body, wherein the guide shaft body extends into the pipeline along the setting direction of the pipeline;

[0020] The head end of the guide shaft is fixed to the pipe mouth, and the area to be repaired in the pipe is located between the head end and the tail end of the guide shaft; a mobile carrier, the mobile carrier is arranged on the guide shaft, and the mobile carrier can move along the guide shaft from its head end to its tail end, and can stay at any position on the guide shaft; and

[0021] The ultraviolet lamp body is fixed on the mobile carrier.

[0022] The further configuration is that: the mobile carrier is composed of a front-end mobile unit, a rear-end mobile unit and a linkage unit arranged between the front-end mobile unit and the rear-end mobile unit;

[0023] The linkage unit includes a cylinder body and a forward shaft. The cylinder body is fixed to the rear-end moving unit, and the forward shaft is fixed to the front-end moving unit. The forward shaft is arranged in the cylinder body. The forward shaft can extend out of the cylinder body to drive the front-end moving unit to move forward along the guide shaft. After the front-end moving unit moves forward, the cylinder body will drive the rear-end moving unit to move forward.

[0024] Further configuration is that: the front-end moving unit and the rear-end moving unit have the same structure; the front-end moving unit and the rear-end moving unit both include a claw assembly and a driving assembly for driving the claw assembly to contract or expand;

[0025] The clamping claw assembly includes a connecting block, a left clamping arm and a right clamping arm, wherein the left clamping arm and the right clamping arm are respectively disposed on the left and right sides of the connecting block, two left connecting rods are hingedly disposed between the connecting block and the left clamping arm, and two right connecting rods are hingedly disposed between the connecting block and the right clamping arm; the upper ends of the left clamping arm and the right clamping arm are respectively hingedly disposed with a left fixing block and a right fixing block, and the left fixing block and the right fixing block are both fixed on the driving assembly;

[0026] The driving assembly includes a driving shaft, which is fixed to the upper end of the connecting pressing block to drive the connecting pressing block to move toward or away from the guide shaft body; when the connecting pressing block moves toward the guide shaft body, the left clamp arm and the right clamp arm will contract; when the connecting pressing block moves away from the guide shaft body, the left clamp arm and the right clamp arm will expand;

[0027] The guide shaft body has two opposite sides each with an inwardly concave inner surface, and the two sections of the concave inner surface each extend from the first end of the guide shaft body to the last end thereof; the guide shaft body has a contact area located in the concave inner surface;

[0028] The lower ends of the left clamp arm and the right clamp arm are both provided with hooks. After the left clamp arm and the right clamp arm are retracted, the hooks at the lower ends of the two clamp arms will extend into the inner surface of the depression and contact and abut against the contact area.

[0029] A further configuration is that: the upper end of the contact area has a downward guide surface for guiding the hook to move downward; the lower end of the contact area has a rubber layer for increasing friction after contacting the hook.

[0030] A further configuration is that: a downward pressing notch with a cross-sectional shape of an equilateral triangle is provided at the lower end of the connecting pressing block, and the upper end of the guiding shaft body is adapted to the downward pressing notch.

[0031] Further configuration is: the driving assembly further comprises a shell, a first chamber is formed in the shell, a first movable inner plug capable of vertical movement is arranged in the first chamber, the first movable inner plug is in contact with the inner wall of the first chamber; the driving shaft is fixed to the lower end of the first movable inner plug, a first spring is arranged between the first movable inner plug and the upper part of the shell, and the first spring is in a compressed state;

[0032] A first notch is provided on the side of the lower end of the first movable inner plug, and a first air cavity is formed between the first notch and the lower half of the shell. A first embedding tube is fixedly embedded in the shell, and the first embedding tube is communicated with the first air cavity. Air can be injected into the first air cavity through the first embedding tube. After the air is injected into the first air cavity, it can push the first movable inner plug to move upward and drive the drive shaft to move upward together.

[0033] Further configuration is that: the first movable inner plug and the upper part of the shell are both provided with a limiting inner groove, and the two ends of the first spring are respectively extended into the limiting inner groove;

[0034] The upper part of the shell is fixedly provided with a protective protrusion, and the protective protrusion can collide with the first movable inner plug to prevent the first spring from being over-extruded and damaged.

[0035] The further configuration is that: the linkage unit also includes a second movable inner plug, a second chamber is opened inside the cylinder body, the second movable inner plug is located in the second chamber for horizontal movement, and the second movable inner plug is in contact with the inner wall of the second chamber; the forward shaft is fixed to the right end of the second movable inner plug, a second spring is arranged between the right half of the cylinder body and the right end of the second movable inner plug, and the second spring is in a compressed state; a blocking block is arranged in the second chamber and fixed to the cylinder body by screws, and the blocking block can collide with the second movable inner plug to limit the position;

[0036] A second notch is provided at the lower end of the left side of the second movable inner plug, and a second air cavity is formed between the second notch and the left half of the cylinder body. A second embedding tube is fixedly embedded at the lower end of the cylinder body, and the second embedding tube is communicated with the second air cavity. Air can be injected into the second air cavity through the second embedding tube. After the air is injected into the second air cavity, it can push the second movable inner plug to move right, and drive the forward shaft to move right to move forward.

[0037] Further configuration is: a lower extension plate is fixedly provided at the lower end of the cylinder body, two first clamping blocks are fixedly provided on the front end surface of the lower extension plate, a horizontal guide rail is provided between the two first clamping blocks, a second clamping block and a stepper motor are also fixedly provided on the front end surface of the lower extension plate, a horizontal rotating shaft is provided between the stepper motor and the second clamping block, and the stepper motor applies a rotating force to the rotating shaft; a moving block is provided on the rotating shaft, an inner peripheral thread matching the outer peripheral thread of the rotating shaft is provided in the moving block, a moving end face is fixedly provided on the moving block, and the lower half of the moving end face is passed by the guide rail; an air injection pipe is fixedly provided on the surface of the moving end face, and the air injection pipe is connected to an external electric air pump through a first conduit; the air injection pipe is provided with a main air pipe extending vertically upward;

[0038] The front end surface of the lower extension plate is fixedly provided with an air collecting pipe, the air collecting pipe is provided with a secondary air pipe extending vertically downward, the air collecting pipe is connected to the first embedded pipe in the front moving unit through a second conduit, and a small electric control valve is provided on the second conduit; the second embedded pipe extends vertically downward; an inner air passage is provided in the cylinder body, one end of the inner air passage is communicated with the first embedded pipe in the rear moving unit, and the other end extends to the lower end surface of the cylinder body;

[0039] The lower ends of the auxiliary air pipe, the second embedded tube and the inner airway are aligned with each other, and with the horizontal movement of the moving block, the main air pipe can be connected with any one of the auxiliary air pipe, the second embedded tube and the inner airway.

[0040] In order to achieve the above object, the present invention also provides a trenchless ultraviolet repair process for a drainage network, comprising the following steps:

[0041] When the ultraviolet lamp body follows the mobile carrier and moves along the guide shaft in the pipeline, the inner wall of the pipeline is repaired by ultraviolet light.

[0042] The beneficial effects of the present invention are:

[0043] 1. In the present invention, the guide shaft is extended into the pipeline, and the guide shaft can play the role of carrying and guiding the mobile carrier, and the mobile carrier will move along the head end of the guide shaft to the end. In this way, the adaptability can be greatly improved. It is only necessary to place the guide shaft along the layout direction of the pipeline, and it can effectively adapt to the horizontal, vertical and oblique pipeline layout. At the same time, it also has strong stability. The mobile carrier moves on the guide shaft without colliding with the inner wall of the pipeline; the inner wall of the pipeline that is moist, has moisture or oil will not hinder the movement of the mobile carrier, and the mobile carrier will not slip. Furthermore, the mobile carrier that has moved to the end can be recycled by simply pulling it out together with the guide shaft, which is very convenient and solves the problem of recycling difficulties.

[0044] 2. In the present invention, the linkage unit can link the front-end moving unit and the rear-end moving unit.

[0045] 3. In the present invention, the left clamp arm and the right clamp arm in the claw assembly will perform a contraction or expansion action under the drive of the connecting pressure block; when the left clamp arm and the right clamp arm are contracted, the hooks at the lower ends of both can extend into the inner surface of the recess and contact and abut against the contact area to fix the claw assembly to the guide shaft body; when the left clamp arm and the right clamp arm are expanded, the hooks at the lower ends of both will break away from the inner surface of the recess, and the claw assembly is separated from the guide shaft body.

[0046] 4. The setting of the downward guide surface in the present invention can ensure that the downward movement of the hook portion will not be hindered and the movement is very smooth; the rubber layer can increase the friction between the contact area and the hook portion, so that the left clamp arm and the right clamp arm can be stably clamped on the guide shaft.

[0047] 5. In the present invention, when the connecting pressing block moves toward the guide shaft, the upper end of the guide shaft will extend into the downward pressing notch, allowing the left clamping arm and the right clamping arm to expand smoothly.

[0048] 6. In the present invention, the first chamber in the shell allows the first movable inner plug to move longitudinally, the drive shaft is fixed at the lower end of the first movable inner plug, and the first spring can provide a normal force for the drive shaft to move downward; the first air cavity and the first embedded tube are set to allow air to be injected, and then push the first movable inner plug upward, so that the drive shaft can follow the upward movement.

[0049] 7. In the present invention, the setting of the limiting inner groove can limit the first spring, and the protective protrusion can collide with the first movable inner plug to prevent the first spring from being over-extruded and damaged.

[0050] 8. In the present invention, the second chamber in the linkage unit allows the second movable inner plug to move horizontally, the forward shaft is fixed at the right end of the second movable inner plug, and the second spring is in a compressed state, which can allow the second movable inner plug to maintain a tendency to stick to the left end of the second chamber; the blocking block can collide with the second movable inner plug to limit the position; the second air cavity and the second embedded tube are provided to allow air to be injected, and then push the second movable inner plug to move right, and drive the forward shaft to move right to move forward.

[0051] 9. In the present invention, the stepper motor can drive the moving block to move, thereby connecting the main air pipe with any one of the auxiliary air pipe, the second embedded tube and the internal airway; the air injection tube will be connected to the external electric air pump, and as the stepper motor drives the moving block to move, air can be injected into the front moving unit, the rear moving unit or the linkage unit; only a single-end input needs to be set to achieve different outputs at three ends, the structure is simple, and only one electric air pump is needed to complete it, and there is no need to set three electric pumps to achieve three-end output. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 This is a schematic diagram of a structure placed in a pipeline in an embodiment;

[0053] Figure 2 It is a structural schematic diagram of the mobile carrier in the embodiment;

[0054] Figure 3 for Figure 1 Enlarged view of part A in the middle;

[0055] Figure 4 This is a schematic diagram of the structure after the guide shaft is hidden in the embodiment;

[0056] Figure 5 for Figure 4 Enlarged view of part B in the middle.

[0057] In the figure: 10, pipeline; 21, guide shaft; 22, recessed inner surface; 23, contact area; 231, downward guide surface; 232, rubber layer; 31, ultraviolet lamp body; 41, connecting block; 411, downward pressure notch; 42, left clamp arm; 421, hook; 43, right clamp arm; 441, left connecting rod; 442, right connecting rod; 451, left fixed block; 452, right fixed block; 46, drive shaft; 51, housing; 511, first chamber; 52, first movable inner plug; 53, first spring; 54, first notch; 55, first air cavity; 56, first embedded tube; 57, limit Inner groove; 58, protective protrusion; 61, cylinder body; 611, second chamber; 62, forward shaft; 63, second movable inner plug; 64, second spring; 65, blocking block; 66, second notch; 67, second air cavity; 68, second embedded tube; 70, lower extension plate; 71, first clamping block; 711, guide rail; 721, second clamping block; 722, stepping motor; 73, rotating shaft; 74, moving block; 75, moving end face; 81, air injection tube; 82, main air pipe; 91, air collection tube; 92, auxiliary air pipe; 93, second conduit; 94, small electric control valve; 95, inner air duct. DETAILED DESCRIPTION

[0058] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0059] As attached Figures 1 to 5 As shown;

[0060] This embodiment discloses a trenchless ultraviolet repair device for a drainage network, comprising:

[0061] A guide shaft 21, which extends into the pipe 10 along the setting direction of the pipe 10 and is attached to the inner wall of the pipe 10; the head end of the guide shaft 21 can be fixed to the pipe mouth of the pipe 10 by screws, and the area to be repaired in the pipe 10 is located between the head end and the tail end of the guide shaft 21;

[0062] A movable carrier, which is disposed on the guide shaft 21 and can move along the guide shaft 21 from its head end to its tail end, and can stay at any position on the guide shaft 21; and

[0063] The ultraviolet lamp body 31 is fixed on the mobile carrier.

[0064] The mobile carrier is composed of a front-end mobile unit, a rear-end mobile unit and a linkage unit arranged between the front-end mobile unit and the rear-end mobile unit;

[0065] The linkage unit includes a cylinder body 61 and a forward shaft 62. The cylinder body 61 is fixed to the rear end moving unit, and the forward shaft 62 is fixed to the front end moving unit. The forward shaft 62 is arranged in the cylinder body 61. The forward shaft 62 can extend out of the cylinder body 61 to drive the front end moving unit to move forward along the guide shaft 21. After the front end moving unit moves forward, the cylinder body 61 will drive the rear end moving unit to move forward.

[0066] The front-end moving unit and the rear-end moving unit have the same structure; both the front-end moving unit and the rear-end moving unit include a claw assembly and a driving assembly for driving the claw assembly to contract or expand;

[0067] The clamping claw assembly includes a connecting block 41, a left clamping arm 42 and a right clamping arm 43. The left clamping arm 42 and the right clamping arm 43 are respectively disposed on the left and right sides of the connecting block 41. Two left connecting rods 441 are hingedly provided between the connecting block 41 and the left clamping arm 42, and two right connecting rods 442 are hingedly provided between the connecting block 41 and the right clamping arm 43. A left fixing block 451 and a right fixing block 452 are respectively hingedly provided at the upper ends of the left clamping arm 42 and the right clamping arm 43. The left fixing block 451 and the right fixing block 452 are both fixed on the driving assembly.

[0068] The driving assembly includes a driving shaft 46, which is fixed to the upper end of the connecting pressing block 41 to drive the connecting pressing block 41 to move toward or away from the guide shaft body 21; when the connecting pressing block 41 moves toward the guide shaft body 21, the left clamping arm 42 and the right clamping arm 43 will contract; when the connecting pressing block 41 moves away from the guide shaft body 21, the left clamping arm 42 and the right clamping arm 43 will expand;

[0069] The guide shaft body 21 has two opposite sides with inwardly concave inner surfaces 22, and the two sections of the concave inner surfaces 22 extend from the head end to the end end of the guide shaft body 21; the guide shaft body 21 has a contact area 23 located in the concave inner surface 22;

[0070] The lower ends of the left clamp arm 42 and the right clamp arm 43 are both provided with hook portions 421 . After the left clamp arm 42 and the right clamp arm 43 are retracted, the hook portions 421 at the lower ends of the two arms will extend into the recessed inner surface 22 and contact and abut against the contact area 23 .

[0071] The upper end of the contact area 23 has a downward guide surface 231 for guiding the hook portion 421 to move downward; the lower end of the contact area 23 has a rubber layer 232 for increasing friction after contacting the hook portion 421 .

[0072] The lower end of the connecting pressing block 41 is provided with a pressing notch 411 with a cross-sectional shape of an equilateral triangle, and the upper end of the guiding shaft 21 is adapted to the pressing notch 411 .

[0073] The driving assembly further includes a housing 51, a first chamber 511 is formed in the housing 51, a first movable inner plug 52 capable of vertical movement is disposed in the first chamber 511, and the first movable inner plug 52 is in contact with the inner wall of the first chamber 511; the driving shaft 46 is fixed to the lower end of the first movable inner plug 52, a first spring 53 is disposed between the first movable inner plug 52 and the upper half of the housing 51, and the first spring 53 is in a compressed state;

[0074] A first notch 54 is provided on the side of the lower end of the first movable inner plug 52, and a first air cavity 55 is formed between the first notch 54 and the lower half of the shell 51. A first embedding tube 56 is fixedly embedded in the shell 51, and the first embedding tube 56 is communicated with the first air cavity 55. Air can be injected into the first air cavity 55 through the first embedding tube 56. After the air is injected into the first air cavity 55, it can push the first movable inner plug 52 to move upward and drive the drive shaft 46 to move upward together.

[0075] The first movable inner plug 52 and the upper part of the housing 51 are both provided with a limiting inner groove 57, and the two ends of the first spring 53 extend into the limiting inner groove 57 respectively;

[0076] A protective protrusion 58 is fixedly provided on the upper part of the housing 51 , and the protective protrusion 58 can collide with the first movable inner plug 52 to prevent the first spring 53 from being over-extruded and damaged.

[0077] The linkage unit further includes a second movable inner plug 63. A second chamber 611 is provided inside the cylinder body 61. The second movable inner plug 63 is located in the second chamber 611 and moves horizontally. The second movable inner plug 63 is in contact with the inner wall of the second chamber 611. The forward shaft 62 is fixed to the right end of the second movable inner plug 63. A second spring 64 is provided between the right half of the cylinder body 61 and the right end of the second movable inner plug 63. The second spring 64 is in a compressed state. A blocking block 65 fixed to the cylinder body 61 by screws is provided in the second chamber 611. The blocking block 65 can collide with the second movable inner plug 63 to limit the position.

[0078] A second notch 66 is provided at the lower end of the left side of the second movable inner plug 63, and a second air cavity 67 is formed between the second notch 66 and the left half of the cylinder body 61. A second embedding tube 68 is fixedly embedded at the lower end of the cylinder body 61, and the second embedding tube 68 is communicated with the second air cavity 67. Air can be injected into the second air cavity 67 through the second embedding tube 68. After the air is injected into the second air cavity 67, it can push the second movable inner plug 63 to move right, and drive the forward shaft 62 to move right to move forward.

[0079] Among them, a lower extension plate 70 is fixedly provided at the lower end of the cylinder body 61, and two first clamping blocks 71 are fixedly provided on the front end surface of the lower extension plate 70, and a horizontal guide rail 711 is provided between the two first clamping blocks 71, and a second clamping block 721 and a stepper motor 722 are also fixedly provided on the front end surface of the lower extension plate 70, and a horizontal rotating shaft 73 is provided between the stepper motor 722 and the second clamping block 721, and the stepper motor 722 applies a rotating force to the rotating shaft 73; a moving block 74 is provided on the rotating shaft 73, and an inner peripheral thread matching the outer peripheral thread of the rotating shaft 73 is provided in the moving block 74, and a moving end surface 75 is fixedly provided on the moving block 74, and the lower half of the moving end surface 75 is passed by the guide rail 711; an air injection pipe 81 is fixedly provided on the surface of the moving end surface 75, and the air injection pipe 81 is connected to the external electric air pump through a first conduit; the air injection pipe 81 is provided with a main air pipe 82 extending vertically upward;

[0080] An air collecting pipe 91 is fixedly provided on the front end surface of the lower extension plate 70, and an auxiliary air pipe 92 extending vertically downward is provided on the air collecting pipe 91. The air collecting pipe 91 is connected to the first embedded pipe 56 in the front moving unit through a second conduit 93, and a small electric control valve 94 is provided on the second conduit 93; the second embedded pipe 68 extends vertically downward; an inner air passage 95 is provided in the cylinder body 61, and one end of the inner air passage 95 is communicated with the first embedded pipe 56 in the rear moving unit, and the other end extends to the lower end surface of the cylinder body 61;

[0081] The lower ends of the auxiliary air pipe 92 , the second embedded tube 68 and the internal air channel 95 are flush with each other. With the horizontal movement of the moving block 74 , the main air pipe 82 can be connected to any one of the auxiliary air pipe 92 , the second embedded tube 68 and the internal air channel 95 .

[0082] This embodiment also discloses a trenchless ultraviolet repair process for a drainage network, comprising the following steps:

[0083] When the ultraviolet lamp body 31 follows the movable carrier and moves along the guide shaft body 21 in the pipeline 10 , the inner wall of the pipeline 10 is repaired by ultraviolet light.

[0084] The working process of this embodiment is:

[0085] Step S1, the stepper motor 722 drives the moving block 74 to move, so that the main air pipe 82 is connected to the auxiliary air pipe 92; the small electric control valve 94 is opened, and the second conduit 93 is connected internally; the electric air pump is turned on, and air is injected into the first air cavity 55 in the front end moving unit, the driving shaft 46 moves upward, and the left clamp arm 42 and the right clamp arm 43 will expand.

[0086] Step S2, close the small electric control valve 94, cut off the inside of the second conduit 93 to prevent air leakage, and keep the left clamp arm 42 and the right clamp arm 43 in the expanded state.

[0087] Step S3, the stepper motor 722 drives the moving block 74 to move, so that the main air pipe 82 is connected to the second embedded tube 68; air is injected into the second air cavity 67 to push the second movable inner plug 63 to move right, and then drive the forward shaft 62 to move right to move forward, and the front moving unit moves forward accordingly.

[0088] Step S4, open the small electric control valve 94, the second conduit 93 is connected internally, the air in the first air cavity 55 in the front end moving unit is discharged, the drive shaft 46 moves downward under the push of the first spring 53, the left clamping arm 42 and the right clamping arm 43 will shrink and be clamped on the guide shaft body 21.

[0089] Step S5, the stepper motor 722 drives the moving block 74 to move, so that the main air pipe 82 is connected to the internal air channel 95; the air in the second air cavity 67 is discharged, but the left clamping arm 42 and the right clamping arm 43 in the front end moving unit and the rear end moving unit are both contracted and clamped on the guide shaft 21, and the front end moving unit and the rear end moving unit will not move.

[0090] Step S6, air is injected into the first air chamber 55 in the rear moving unit, the driving shaft 46 moves upward, and the left clamp arm 42 and the right clamp arm 43 expand; the left clamp arm 42 and the right clamp arm 43 in the front moving unit are clamped on the guide shaft 21, at this time, due to the force of the second spring 64, the cylinder body 61 moves rightward under the force of the second spring 64, and the rear moving unit moves forward accordingly;

[0091] In step S7, the stepper motor 722 drives the moving block 74 to move, so that the main air pipe 82 is connected to the auxiliary air pipe 92; the air in the first air cavity 55 in the rear end moving unit is discharged, and the driving shaft 46 moves downward under the push of the first spring 53, and the left clamping arm 42 and the right clamping arm 43 will shrink and be clamped on the guide shaft 21.

[0092] By repeatedly executing steps S1 to S7 , the mobile carrier can continuously move forward along the guide shaft 21 .

[0093] It should be noted that in this embodiment, a baffle is provided at the end of the guide shaft 21 , and when the mobile carrier needs to be recovered, the mobile carrier and the guide shaft 21 can be pulled out of the pipeline 10 together.

[0094] It should be noted that in this embodiment, the stepper motor 722, the small electric control valve 94 and the electric air pump are all connected to the PLC, and the stepper motor 722, the small electric control valve 94 and the electric air pump are controlled by PLC programming.

[0095] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A trenchless ultraviolet repair device for a drainage network, characterized in that: Included are: A guide shaft (21), wherein the guide shaft (21) extends into the pipeline (10) along the setting direction of the pipeline (10); the head end of the guide shaft (21) is fixed to the pipe mouth of the pipeline (10), and the area to be repaired in the pipeline (10) is located between the head end and the tail end of the guide shaft (21); A movable carrier, wherein the movable carrier is arranged on the guide shaft (21), and the movable carrier can move along the guide shaft (21) from its head end to its tail end, and can stay at any position on the guide shaft (21); and An ultraviolet lamp body (31), wherein the ultraviolet lamp body (31) is fixed on a mobile carrier; The mobile carrier is composed of a front-end mobile unit, a rear-end mobile unit and a linkage unit arranged between the front-end mobile unit and the rear-end mobile unit; The linkage unit comprises a cylinder body (61) and a forward shaft (62); the cylinder body (61) is fixed to the rear-end moving unit, the forward shaft (62) is fixed to the front-end moving unit, the forward shaft (62) is arranged in the cylinder body (61), and the forward shaft (62) can extend out of the cylinder body (61) to drive the front-end moving unit to move forward along the guide shaft (21); after the front-end moving unit moves forward, the cylinder body (61) will drive the rear-end moving unit to move forward; The front-end moving unit and the rear-end moving unit have the same structure; both the front-end moving unit and the rear-end moving unit include a claw assembly and a driving assembly for driving the claw assembly to contract or expand; The clamping claw assembly comprises a connecting pressure block (41), a left clamping arm (42) and a right clamping arm (43), wherein the left clamping arm (42) and the right clamping arm (43) are respectively disposed on the left and right sides of the connecting pressure block (41), two left connecting rods (441) are hingedly arranged between the connecting pressure block (41) and the left clamping arm (42), and two right connecting rods (442) are hingedly arranged between the connecting pressure block (41) and the right clamping arm (43); the upper ends of the left clamping arm (42) and the right clamping arm (43) are respectively hingedly arranged with a left fixing block (451) and a right fixing block (452), and the left fixing block (451) and the right fixing block (452) are both fixed on the driving assembly; The driving assembly comprises a driving shaft (46), and the driving shaft (46) is fixed to the upper end of the connecting pressing block (41) to drive the connecting pressing block (41) to move toward or away from the guiding shaft body (21); when the connecting pressing block (41) moves toward the guiding shaft body (21), the left clamping arm (42) and the right clamping arm (43) will contract; when the connecting pressing block (41) moves away from the guiding shaft body (21), the left clamping arm (42) and the right clamping arm (43) will expand; The guide shaft body (21) has two opposite sides each provided with an inwardly recessed inner surface (22), and the two sections of the recessed inner surface (22) extend from the first end of the guide shaft body (21) to the rear end thereof; The guide shaft (21) has a contact area (23) located in the inner surface of the recess (22); The lower ends of the left clamp arm (42) and the right clamp arm (43) are both provided with hook portions (421). After the left clamp arm (42) and the right clamp arm (43) are retracted, the hook portions (421) at the lower ends of the two clamp arms will extend into the inner surface of the recess (22) and contact and abut against the contact area (23).

2. A trenchless ultraviolet repair device for a drainage network according to claim 1, characterized in that: The upper end of the contact area (23) has a downward guide surface (231) for guiding the hook portion (421) to move downward; the lower end of the contact area (23) has a rubber layer (232) for increasing friction after contacting the hook portion (421).

3. The trenchless ultraviolet repair device for drainage pipe network according to claim 1, characterized in that: The lower end of the connecting pressing block (41) is provided with a pressing notch (411) having a cross-sectional shape of an equilateral triangle, and the upper end of the guiding shaft (21) is adapted to the pressing notch (411).

4. The trenchless ultraviolet repair device for drainage pipe network according to claim 1, characterized in that: The driving assembly further comprises a housing (51), a first chamber (511) being formed in the housing (51), a first movable inner plug (52) capable of vertical movement being arranged in the first chamber (511), the first movable inner plug (52) being in contact with the inner wall of the first chamber (511); the driving shaft (46) being fixed to the lower end of the first movable inner plug (52), a first spring (53) being arranged between the first movable inner plug (52) and the upper part of the housing (51), the first spring (53) being in a compressed state; A first notch (54) is provided on the side of the lower end of the first movable inner plug (52), and a first air cavity (55) is formed between the first notch (54) and the lower half of the shell (51). A first embedding tube (56) is fixedly embedded in the shell (51), and the first embedding tube (56) is communicated with the first air cavity (55). Air can be injected into the first air cavity (55) through the first embedding tube (56). After the air is injected into the first air cavity (55), it can push the first movable inner plug (52) to move upward and drive the driving shaft (46) to move upward together.

5. A trenchless ultraviolet repair device for a drainage network according to claim 4, characterized in that: The first movable inner plug (52) and the upper part of the housing (51) are both provided with a limiting inner groove (57), and the two ends of the first spring (53) extend into the limiting inner groove (57) respectively; A protective protrusion (58) is fixedly provided on the upper half of the housing (51), and the protective protrusion (58) can collide with the first movable inner plug (52) to prevent the first spring (53) from being over-extruded and damaged.

6. The trenchless ultraviolet repair device for drainage pipe network according to claim 4, characterized in that: The linkage unit further comprises a second movable inner plug (63), a second chamber (611) is provided inside the cylinder body (61), the second movable inner plug (63) is located in the second chamber (611) and moves horizontally, and the second movable inner plug (63) is in contact with the inner wall of the second chamber (611); the forward shaft (62) is fixed to the right end of the second movable inner plug (63), a second spring (64) is provided between the right half of the cylinder body (61) and the right end of the second movable inner plug (63), and the second spring (64) is in a compressed state; a blocking block (65) is provided in the second chamber (611) and is fixed to the cylinder body (61) by screws, and the blocking block (65) can collide with the second movable inner plug (63) to limit the position; A second notch (66) is provided at the lower end of the left side of the second movable inner plug (63), and a second air cavity (67) is formed between the second notch (66) and the left half of the cylinder body (61). A second embedding tube (68) is fixedly embedded at the lower end of the cylinder body (61), and the second embedding tube (68) and the second air cavity (67) are kept in communication. Air can be injected into the second air cavity (67) through the second embedding tube (68). After the air is injected into the second air cavity (67), it can push the second movable inner plug (63) to move rightward, and drive the forward shaft (62) to move rightward to move forward.

7. The trenchless ultraviolet repair device for drainage pipe network according to claim 6, characterized in that: A lower extension plate (70) is fixedly provided at the lower end of the cylinder body (61), two first clamping blocks (71) are fixedly provided at the front end surface of the lower extension plate (70), a horizontal guide rail (711) is provided between the two first clamping blocks (71), a second clamping block (721) and a stepper motor (722) are also fixedly provided at the front end surface of the lower extension plate (70), a horizontal rotating shaft (73) is provided between the stepper motor (722) and the second clamping block (721), and the stepper motor (722) applies a rotating force to the rotating shaft (73); The rotating shaft (73) is provided with a moving block (74), an inner thread matched with the outer thread of the rotating shaft (73) is provided in the moving block (74), a moving end face (75) is fixedly provided on the moving block (74), and the lower half of the moving end face (75) is provided for the guide rail (711) to pass through; a gas injection pipe (81) is fixedly provided on the surface of the moving end face (75), and the gas injection pipe (81) is connected to an external electric air pump via a first conduit; the gas injection pipe (81) is provided with a main gas pipe (82) extending vertically upward; An air collecting pipe (91) is fixedly provided on the front end surface of the lower extension plate (70), and the air collecting pipe (91) is provided with a secondary air pipe (92) extending vertically downward. The air collecting pipe (91) is connected to the first embedded pipe (56) in the front end moving unit through a second conduit (93), and a small electric control valve (94) is provided on the second conduit (93); the second embedded pipe (68) extends vertically downward; an inner air passage (95) is provided in the cylinder body (61), and one end of the inner air passage (95) is communicated with the first embedded pipe (56) in the rear end moving unit, and the other end extends to the lower end surface of the cylinder body (61); The lower ends of the auxiliary air pipe (92), the second embedded tube (68) and the inner air passage (95) are aligned with each other, and as the moving block (74) moves horizontally, the main air pipe (82) can be connected to any one of the auxiliary air pipe (92), the second embedded tube (68) and the inner air passage (95).

8. A trenchless ultraviolet repair process for a drainage network, applied to the trenchless ultraviolet repair device for a drainage network as claimed in any one of claims 1 to 7, characterized in that: The following steps are included: When the ultraviolet lamp body (31) follows the movable carrier and moves along the guide shaft (21) in the pipeline (10), the inner wall of the pipeline (10) is repaired by ultraviolet rays.

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